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BUNG.

Patented June 15, 1886.

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(No Model.)

0. W. BISENHART.

UNITED STATES OSCAR W. EISENHART, EPHRATA, PENNSYLVANIA.

BUNG.

.srncrrroarron forming part a Letters Patent No. 343,574, dated June15,1886.

Application filed April 15, 1886.

To all whom it may concern-.- I

Be it known that I, OSCAR W. EISENHART, a citizen of the United States,residing at Ephrata, county of Lancaster, State of Pennsylvania, haveinvented a new and useful Improvement in Bungs, of which the followingis a specification.

This improvement pertains more particularly to the class of bungsdesigned to be used in combination with a metal re-enforced or bushedhole in the barrel or keg stave.

The object of the invention is to secure a ready-closing bung,positively air-tight when secured in place, and which may be quicklyremoved and replaced without injury to the. re-enforce or bush. The bungis also suitable for direct use without the intervention of a metallicbush, but I give preference to its use with the latter.

My improvement requires no change in the barrels or kegs to adapt itthereto. It simply takes the place of the wooden plug or bung, butprovides a sure and positive closure of the barrel or keg, and thehigher the tension of the gases therein the tighter the bung, and therecan be no tampering with the bung unless one is provided with the propertools to operate thereon.

My improved bung is constructed of a metal adapted to the nature of theliquid inclosed in the barrel or keg, and the several parts of the samemay be given sufficient play so as to admit of the casting of the same,so that very little skilled fitting will be requisite to adapt them foruse. The joints, being made by compression upon an elastic packing, willadjust themselves by pressure to such slight inequalities as will existin good merchantable castings of the present day.

The drawings herewith, forming a part of this specification, and inwhich similar letters of reference indicate similar parts, show veryclearly to an expert the nature of my invention.

Figure 1 represents in elevation, partly in section, afullsize bung asdevised for use in a barrel or keg provided with a metallic-hushedbung-hole. Fig. 2 represents the lock, showing the dogs retracted withinthe periphery of the plug, the upper portion of the plug removed, andthe pinion of the stem in gear with the teeth of the dogs. Fig. 3represents Serial No.198,914. (No model.)

A represents the annular shell forming the bung. havingare-enforee, A,at the top. This bung I have shown plain upon its exterior and interiorsurfaces, as I prefer to use the bung in combination with the usualunthreaded metallic-hushed bung-holes; but, if desired, the exteriorsurface may be threaded to fit with and conform to bung-hole re-enforces0r bushesv which are screw-threaded. The bung may also be applieddirectly to bung-holes formed in the staves of the barrels or kegs. Aplug consisting of an upper portion, B, and lower portion, B, isconnected by two opposite parts, B cast integral with B and B, and thusforming a receptacle, B between them for the reception of thelocking-dogs O. The dogs are of the form shown in Figs. 2 and 3, havingfour or more teeth projected from their hubs G, and are pivoted at G tothe plug, being held in removable connection therewith by bolts D, nutsD, and heads D the latter so arranged as to act as stops to the movementof the head E of the locking and securing bolt E. Central perforationsin the lower and upper portions, B and B, of the plug permits theintroduction of the stem E, which has an enlarged portion, E projectingthrough the portion B, a pinion, E of ten or more teeth, filling up theheight of the receptacle B ,a reduced portion, F)", passing through B, astem or bolt,'E,exten ding. upward through the cap F, with a nut, E andsquare or any other desired form of extension, E, adapted to be operatedby a suitable key. The plug is movably retained upon the stern by a pin,E or its equivalent. The cap F is formed with shoulders F and a recess,F, and is of such depth as will permit the nut E, with the lookingportion E of the stem projected above the same, to be concealed withinsaid recess, having no portion extending beyond the face F of the cap. Aperforation in the base of the recess permits the passage of the stemthrough the same. A gum or suitable elastic washer, G, preferably ofhydraulic-cup form, is placed between the shoulder F and top of thebung,

and a washer, H, beneath the nut E When the dogs are projected beneaththe lower edge of the bung, as shown in Fig. 1, these washers serve,upon tightening up the nut, to make an air and gas tightjoint to thebung. The upper portion, 13, of the plug is enlarged upon its face tosuit the interior form of the bung,

and the enlargement permits the passage of the lower portion, B, and thedogs 0 through the bung, while the plug is prevented by the enlargementfrom dropping within the barrel or keg.

The operation ofthe bung and lock is as fol lows: The dogs 0 are placedin the receptacle B of the plug, and the pivotal bolts D secured inplace. Thcdogs are then placed in the position shown in Fig. 2, withtheir outer faces coincident with the periphery of the plug. The stem orbolt E is then inserted and turned until the teeth of the pinion E willinterlock with the teeth of the dogs, as shown, with the head E clear ofand intermediate to the heads D of the pivotal bolts, and the pin E isinserted, which secures the parts in operative connection with eachother. The pl ugis now dropped within the bung previously driven intothe barrel or'keg, with the dogs 0 in line with the loweredge ot" thesame. The stem may now be turned by the key, when the teeth of thepinionE, operating upon the teeth of the dogs 0, will throw the same into theposition shown in Fig. 3, and lock the plug against withdrawal without aproper key. The dogs are shown as thrown out but half-way. and theirprotrusion may be considerably increased by a further turning of thestem E. The washer G is now placed upon the upper end of the bung, andthe cap F put in place over the stem. A washer, H, maybe placed underthe nut E and the latter being tightened up a positive closure is madeagainst the escape of the liquid or the gases generated therefrom. \Vhenit is desired to remove the plug, the nut E is first loosened by asocket-wrench, the key is then applied, and the motion of the stem beingreversed the dogs are retracted and the plug may be lifted out.

The bungs may be supplied with the plugs and washers in place, andsubsequently be as a whole driven into the barrel or keg; or, asdescribed, the bungs may he first driven into place and the plugs, withtheir dogs and caps, be subsequently introduced.

It will be seen that the use of my improved bung facilitates the fillingofthe barrel or keg, and permits access to the interior of the same forcleansing without pounding upon and bruising the staves to release thebung, an aperture of ample size being secured by the withdrawal of theplug.

Having described the use and advantage of my improved bung, togetherwith the construction of the same, I desire to secure by Letters Patentthe following claims thereon:

1. As an improvement in bungs, an annular shell having a re-enforced topand exterior and interior surfaces free from obstructions, incombination with a plug having a receptacle therein, movable dogspivoted in the receptacle, a stem adapted to said plug having a pinionin gear with said dogs, and having an upper threaded portion, a nut, anda squared or keyed portion, and a cap and washers, substantially as andfor the purpose set forth.

2. As an improvement in bungs, a plug having receptacles for movabledogs pivoted therein, having its upper portion enlarged, so as to retainsaid portion within thebung, while the lower portion, with the dogs,projects below the same, in combination with a stemprovided with teethlying in the plane of the dogs, and interlocking with the teeth of saiddogs, a head, E, lint E and squared portion E, pin E cap F, washers G H,and shell A, substantially as and for the purpose declared.

3. As an improvement in bungs provided with a locking device, the dogs0, having an outer periphery corresponding with that of theirinclosing-receptacle in the plug, with four or more teeth upon the hubconcentric with their pivotal points 0 said teeth interlocking withteeth E integral with the stem E, and adapted to be partially rotatedthereby,and pivotal bolts D, in combination with the plug 13 B 13, itsstem E, pinion E cap F, washers G H, nut E squared portion E, pin E andshell A, substantially as shown, and for the purpose described.

OSCAR W. EISENHART.

\Vit nesses:

F. W. HULL, D. J. MoOAA.

